Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
The M4- button must be activated before the diagnostic trouble code (DTC) can be detected. Diagnostic trouble code (DTC) PSM-0027 is stored if button M4- has been activated for longer than 60 seconds.

Possible source
- Button M4- has jammed in the depressed position.
- Defective control panel.

Fault symptom[s]
- The operation button does not function.